Proctacanthusgracilis is a species of robber flies (insects in the family Asilidae). "Proctacanthusgracilis Report". Integrated Taxonomic Information...
June 2023. Curran, C.H. (1951). "The West Indian species of Mydas and Proctacanthus (Diptera: Mydaidae and Asilidae)" (PDF). American Museum Novitates....
(1645): 1–15. Curran, C.H. (1951). "The West Indian species of Mydas and Proctacanthus (Diptera: Mydaidae and Asilidae)" (PDF). American Museum Novitates (1507):...